/* 根 */
.yyz-iv {
    --time:0.5s;
    width: 100%;
    height: 100%;
    transition: background var(--time), opacity var(--time);
    position: absolute;
    top: 0;
    left: 0;
}
/* 图片的外层div */
.yyz-iv_img-box {
    width: 100%;
    height: 100%;
    position: relative;
}
/* 图片 */
.yyz-iv_img{
    --img-time: 0s;
    cursor: pointer;
    position: absolute;
    -webkit-user-drag: none;
    transform: rotate(0deg);
    transition: all var(--img-time);
    user-select: none;
}
/* 操作按钮的box */
.yyz-iv_operation{
    z-index: 9999;
    --operation-height:50px;
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    height: var(--operation-height);
    border-radius: calc(var(--operation-height) / 2);
    min-width: 100px;
    background-color: rgba(0,0,0,0.1);
    display: flex;
}
/* 操作按钮 */
.yyz-iv_operation-btn{
    border-radius: 50%;
    height: var(--operation-height);
    width: var(--operation-height);
    font-size: 30px;
    text-align: center;
    line-height: var(--operation-height);
    color: #fff;
    cursor: pointer;
    vertical-align: middle;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    box-sizing: border-box;
}
/* 操作按钮鼠标效果 */
.yyz-iv_operation-btn:hover{
    background-color: rgba(0,0,0,0.1);
}
/* 操作按钮的图标 */
.yyz-iv_operation-btn>svg{
    width: 100%;
    height: 100%;
}
/* 缩放的倍率提示 */
.yyz-iv_tip{
    height: 30px;
    line-height: 30px;
    padding: 0 10px;
    background-color: rgba(0,0,0,0.33);
    position: absolute;
    top: 50%;
    left: 50%;
    border-radius: 15px;
    color: #fff;
    transform: translateX(-50%) translateY(-50%);
}